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Finding the Fourth Proportional to 172,467.79, 258,868.53 and 124,485.86

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Solution

The fourth proportional to 172,467.79, 258,868.53 and 124,485.86 is: 186,849.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,467.79 : 258,868.53 = 124,485.86 : x
  2. Step 2: Convert to fraction form
    172,467.79/258,868.53 = 124,485.86/x
  3. Step 3: Cross multiply
    172,467.79x = 258,868.53 × 124,485.86
  4. Step 4: Simplify right side
    172,467.79x = 32,225,472,087.92
  5. Step 5: Solve for x
    x = 32,225,472,087.92/172,467.79
  6. Step 6: Final answer
    x = 186,849.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.